Water or other fluid meter



(N6 Model.)

E. W. SHE-DD.A A WATER 0R OTHER FLUID METER.

Patented July 77,' 1896.

ill!

lillll "F ,74.9.

' Q @F C) urn-ul PATENT FFlCE,

EDV/TARD lV. SHEDD, OF VORCESTER, MASSACHUSETTS.

WATER OR OTHER'FLUID METER.

SPECIFICATION forming part of Letters Patent No. 563,623, dated July 7, 1896,

Application liled December 5, 1894. Serial No. 530,943. (No model.)

To @ZZ whom it may concern.-

Be it known that I, EDWARD lV. SHEDD, a citizen of the United States, residing at \Vorcester, in the county of lVoreester and State of Massachusetts, have invented a new and useful vater or other Fluid Meter, of which the following is a specification.

To illustrate the object and design of my invention, I refer to the mechanism illustrated in the accompanying drawings, in Which- Figure l is a horizontal section of the meter on the line l 2, Fig. 2; Fig. 2, an eleva tion of the meter; Fig. 3, a vertical section of the stuffing-box Gr; Fig. il, a detail plan of the pistons or plungers D; Fig. 5, a detail elevation of the pistons or plungers D Fig. G, an end view of the rolls E; Fig. 7, an elevation of the rolls E; Fig. 8, a plan of the arms F, and Fig. 9 an elevation of the arms F.

Similar letters refer to similar parts throughout the several views.

The metallic case A of the meter is composed of two parts, which are respectively flanged and bolted together, so as to be Water-tight at the joint, as shown in Fig. 2. The part a contains the revolving plungers or pistons D and D With suitable interior hearings for one end of their shafts, and the portion ZJ is the covervhich is furnished with similar hearings for the other end of the shafts.

The case A supports the clock-train-registering apparatus employed with the usual stuffing-box G to pack the spindle f, which passes through the cover b to the outside and drives the eloclrtiain.

My improvement is illustrated more fully in detail Figs. 5, G, 7, and 8. The Water pis tons or plungers are indicated by D and D", respectively. They are both elliptical and identical in form and character and are furnished with gear-teeth 7e. They are thus toothed gears as Well as pistons, and perform the double function of gears and pistons. They are mounted, respectively, upon shafts e and e', which have their bearings in interior journals formed in the case A. The ends of the elliptical pistons or plungers D and D' are grooved parallel with the gear-teeth for the rolls E. The rolls E and E' are substituted for the teeth at the ends of the pistons.

The rolls E and E' are mounted upon shafts i and t', which have their ends secured in suitable hearings in the arms F and F', which are secured in seats in the top and in the hottom of the pistons or plungers D and D", ren spectively; but many modications can be made to accomplish the mounting of the rolls E and E' in the ends of the pistons D and D irrespective of the arms F and F or the shafts i and i.

The interior end surfaces of the part oJ of the ease A from t to ec and from y to g/ are true circles struck from the axes of the plun gers, respectively, With a radius equal to onehalf the major axis of the plungers.

The rolls E and E' in the ends c on each side of the major axis of the two plungers are fitted so as to make a practically Water-tight joint with the circular part of the case A, and all the teeth of each gear are fitted so as to make practically Water-tight joints With each other at all points in their revolution.

In Fig. 3, g is an annular gear secured to the plunger D. The annular gear g engages With the gear 7L, which is upon the spindle shaft f.

B and C indicate, respectively, the induction and the ed uction passages for the Water, which is supposed to he entering through the pipe B under pressure, and to meet the prevailing custom at the present time the Watermeter is placed in a horizontal position-that is, with the induction and eduction passages for the Wat er in a horizontal position, as shown in Fig. 2, which Will permit the meter to he placed and connected in a horizontal position-With the induction-passage Bin the side of the case A and the eduction-passage C oppositie with a recess Z in the bottom of the case A, the recessZ extending from the periphery of the minor axes of the pistons D and D out through the side of the meter-case A, as shown in Fig. l., for the purpose of permitting sediment, sand, and solid obstacles which enter the meter to pass off through the eduction-passage G.

illy invention relates te the novel construe- -tion and arrangement of the parts of a Watermeter, which l prefer to constructl Wholly or partially of aluminium or aluminium alloys,

thereby providing pistons or plungers of a light-Weight metal to insure a sensitive dis- IOO placing-meter under varying speeds and pressures and various temperatures of Water or other iuids, to provide pistons or plungers and other parts of a meter made of a metal not materially susceptible to corrosion by the action of hot or cold Water, and to provide pistons or pliingers of aluminium or aluminium alloys of such a character of composition as to reduce the friction of the teeth of the gear-formed peripheries in contact in the operation of revolving the pistons.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The combination in a meter-case, of revolving elliptical pistons or plungers in constant direct gear connection by means of teeth formed on their peripheries, with the rollers side having a recess Z in the bottom of the 3o ease, as described.

EDWARD WV. SHEDD.

Witnesses:

FREDERICK E. DROWN, ALBEN W. SIRLEY. 

